package com.nono.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class adminFilter  extends HttpServlet implements Filter {
    private static final long serialVersionUID = 1L;

    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
           HttpServletRequest request=(HttpServletRequest)arg0;   
           HttpServletResponse response  =(HttpServletResponse) arg1;    
           HttpSession session = request.getSession(false);
           String name = null;
           int role = 0;
    	   try{
    		   name =  (String)session.getAttribute("name");
    		   role = (Integer)session.getAttribute("role");
    	   }catch(Exception e) {
    		   name = "";
    		   role = 0;
    	   };
           String url=request.getRequestURI();
           if( !"admin".equals(name)  && url.indexOf("admin.do")>-1 ) {
        	   response.sendRedirect(request.getContextPath() + "/login.do");
               return;
           }else{
               arg2.doFilter(arg0, arg1);
        	   return;
           }
    }
    public void init(FilterConfig arg0) throws ServletException {
    }

}